diff --git a/include/conversation.php b/include/conversation.php
index 3b3c7a4c1..a2927f9bf 100644
--- a/include/conversation.php
+++ b/include/conversation.php
@@ -584,7 +584,7 @@ function conversation(App $a, array $items, Pager $pager, $mode, $update, $previ
 		if (in_array($mode, ['community', 'contacts'])) {
 			$writable = true;
 		} else {
-			$writable = ($items[0]['uid'] == 0) && in_array($items[0]['network'], [Protocol::ACTIVITYPUB, Protocol::OSTATUS, Protocol::DIASPORA, Protocol::DFRN]);
+			$writable = ($items[0]['uid'] == 0) && in_array($items[0]['network'], Protocol::FEDERATED);
 		}
 
 		if (!local_user()) {
@@ -872,7 +872,7 @@ function conversation_add_children(array $parents, $block_authors, $order, $uid)
 
 	foreach ($items as $index => $item) {
 		if ($item['uid'] == 0) {
-			$items[$index]['writable'] = in_array($item['network'], [Protocol::ACTIVITYPUB, Protocol::OSTATUS, Protocol::DIASPORA, Protocol::DFRN]);
+			$items[$index]['writable'] = in_array($item['network'], Protocol::FEDERATED);
 		}
 	}
 
@@ -931,7 +931,7 @@ function item_photo_menu($item) {
 		$contact_url = 'contact/' . $cid;
 		$posts_link = 'contact/' . $cid . '/posts';
 
-		if (in_array($network, [Protocol::DFRN, Protocol::DIASPORA])) {
+		if (in_array($network, [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA])) {
 			$pm_url = 'message/new/' . $cid;
 		}
 	}
@@ -954,7 +954,7 @@ function item_photo_menu($item) {
 		}
 
 		if ((($cid == 0) || ($rel == Contact::FOLLOWER)) &&
-			in_array($item['network'], [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::OSTATUS, Protocol::DIASPORA])) {
+			in_array($item['network'], Protocol::FEDERATED)) {
 			$menu[L10n::t('Connect/Follow')] = 'follow?url=' . urlencode($item['author-link']);
 		}
 	} else {
diff --git a/mod/crepair.php b/mod/crepair.php
index 7e10b2ff2..ce27b4498 100644
--- a/mod/crepair.php
+++ b/mod/crepair.php
@@ -132,7 +132,7 @@ function crepair_content(App $a)
 		$remote_self_options = ['0' => L10n::t('No mirroring'), '2' => L10n::t('Mirror as my own posting')];
 	}
 
-	$update_profile = in_array($contact['network'], [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS]);
+	$update_profile = in_array($contact['network'], Protocol::FEDERATED);
 
 	$tab_str = Module\Contact::getTabsHTML($a, $contact, 5);
 
diff --git a/mod/item.php b/mod/item.php
index 20dc9dfda..fff4f712c 100644
--- a/mod/item.php
+++ b/mod/item.php
@@ -163,7 +163,7 @@ function item_post(App $a) {
 	}
 
 	// Allow commenting if it is an answer to a public post
-	$allow_comment = local_user() && ($profile_uid == 0) && $toplevel_item_id && in_array($toplevel_item['network'], [Protocol::ACTIVITYPUB, Protocol::OSTATUS, Protocol::DIASPORA, Protocol::DFRN]);
+	$allow_comment = local_user() && ($profile_uid == 0) && $toplevel_item_id && in_array($toplevel_item['network'], Protocol::FEDERATED);
 
 	// Now check that valid personal details have been provided
 	if (!Security::canWriteToUserWall($profile_uid) && !$allow_comment) {
diff --git a/src/Content/ContactSelector.php b/src/Content/ContactSelector.php
index e327069b3..22bfe08b5 100644
--- a/src/Content/ContactSelector.php
+++ b/src/Content/ContactSelector.php
@@ -105,7 +105,7 @@ class ContactSelector
 
 		$networkname = str_replace($search, $replace, $network);
 
-		if ((in_array($network, [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS])) && ($profile != "")) {
+		if ((in_array($network, Protocol::FEDERATED)) && ($profile != "")) {
 			// Create the server url out of the profile url
 			$parts = parse_url($profile);
 			unset($parts['path']);
diff --git a/src/Content/Widget/ContactBlock.php b/src/Content/Widget/ContactBlock.php
index bc33b9c9c..ef152f900 100644
--- a/src/Content/Widget/ContactBlock.php
+++ b/src/Content/Widget/ContactBlock.php
@@ -75,7 +75,7 @@ class ContactBlock
 				'hidden' => false,
 				'archive' => false,
 				'rel' => $rel,
-				'network' => [Protocol::DFRN, Protocol::ACTIVITYPUB, Protocol::OSTATUS, Protocol::DIASPORA],
+				'network' => Protocol::FEDERATED,
 			], ['limit' => $shown]);
 
 			if (DBA::isResult($contact_ids_stmt)) {
diff --git a/src/Core/Protocol.php b/src/Core/Protocol.php
index 0038b505a..759a6e70e 100644
--- a/src/Core/Protocol.php
+++ b/src/Core/Protocol.php
@@ -23,6 +23,8 @@ class Protocol
 
 	const NATIVE_SUPPORT = [self::DFRN, self::DIASPORA, self::OSTATUS, self::FEED, self::MAIL, self::ACTIVITYPUB];
 
+	const FEDERATED = [self::DFRN, self::DIASPORA, self::OSTATUS, self::ACTIVITYPUB];
+
 	// Supported through a connector
 	const DIASPORA2 = 'dspc';    // Diaspora connector
 	const LINKEDIN  = 'lnkd';    // LinkedIn
diff --git a/src/Core/Search.php b/src/Core/Search.php
index e26cc0edc..9f8375da1 100644
--- a/src/Core/Search.php
+++ b/src/Core/Search.php
@@ -49,7 +49,7 @@ class Search extends BaseObject
 				return $emptyResultList;
 			}
 
-			if (!(in_array($user_data["network"], [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::OSTATUS, Protocol::DIASPORA]))) {
+			if (!(in_array($user_data["network"], Protocol::FEDERATED))) {
 				return $emptyResultList;
 			}
 
diff --git a/src/Model/Contact.php b/src/Model/Contact.php
index f38c69ed0..a10c0d05e 100644
--- a/src/Model/Contact.php
+++ b/src/Model/Contact.php
@@ -963,7 +963,7 @@ class Contact extends BaseObject
 		}
 
 		if ((empty($profile["addr"]) || empty($profile["name"])) && (defaults($profile, "gid", 0) != 0)
-			&& in_array($profile["network"], [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS])
+			&& in_array($profile["network"], Protocol::FEDERATED)
 		) {
 			Worker::add(PRIORITY_LOW, "UpdateGContact", $profile["gid"]);
 		}
@@ -1587,7 +1587,7 @@ class Contact extends BaseObject
 			return '';
 		}
 
-		if (in_array($contact["network"], [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS, ""])) {
+		if (empty($contact["network"]) || in_array($contact["network"], Protocol::FEDERATED)) {
 			$sql = "(`item`.`uid` = 0 OR (`item`.`uid` = ? AND NOT `item`.`global`))";
 		} else {
 			$sql = "`item`.`uid` = ?";
@@ -1779,8 +1779,7 @@ class Contact extends BaseObject
 			self::markForArchival($contact);
 		}
 
-		$condition = ['self' => false, 'nurl' => Strings::normaliseLink($url),
-			'network' => [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS]];
+		$condition = ['self' => false, 'nurl' => Strings::normaliseLink($url), 'network' => Protocol::FEDERATED];
 
 		// These contacts are sharing with us, we don't poll them.
 		// This means that we don't set the update fields in "OnePoll.php".
@@ -1878,7 +1877,7 @@ class Contact extends BaseObject
 		self::updateContact($id, $uid, $ret['url'], $ret);
 
 		// Update the corresponding gcontact entry
-		PortableContact::lastUpdated($ret["url"]);
+		GContact::updateFromProbe($ret['url']);
 
 		return true;
 	}
diff --git a/src/Model/Item.php b/src/Model/Item.php
index 3244053ba..c3ff0520b 100644
--- a/src/Model/Item.php
+++ b/src/Model/Item.php
@@ -177,7 +177,7 @@ class Item extends BaseObject
 
 		// We can always comment on posts from these networks
 		if (array_key_exists('writable', $row) &&
-			in_array($row['internal-network'], [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS])) {
+			in_array($row['internal-network'], Protocol::FEDERATED)) {
 			$row['writable'] = true;
 		}
 
@@ -1354,7 +1354,7 @@ class Item extends BaseObject
 		 * We have to check several networks since Friendica posts could be repeated
 		 * via OStatus (maybe Diasporsa as well)
 		 */
-		if (in_array($item['network'], [Protocol::ACTIVITYPUB, Protocol::DIASPORA, Protocol::DFRN, Protocol::OSTATUS, ""])) {
+		if (empty($item['network']) || in_array($item['network'], Protocol::FEDERATED)) {
 			$condition = ["`uri` = ? AND `uid` = ? AND `network` IN (?, ?, ?)",
 				trim($item['uri']), $item['uid'],
 				Protocol::DIASPORA, Protocol::DFRN, Protocol::OSTATUS];
@@ -2077,7 +2077,7 @@ class Item extends BaseObject
 
 		// Only distribute public items from native networks
 		$condition = ['id' => $itemid, 'uid' => 0,
-			'network' => [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS, ""],
+			'network' => array_merge(Protocol::FEDERATED ,['']),
 			'visible' => true, 'deleted' => false, 'moderated' => false, 'private' => false];
 		$item = self::selectFirst(self::ITEM_FIELDLIST, $condition);
 		if (!DBA::isResult($item)) {
@@ -2233,7 +2233,7 @@ class Item extends BaseObject
 		}
 
 		// is it an entry from a connector? Only add an entry for natively connected networks
-		if (!in_array($item["network"], [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS, ""])) {
+		if (!in_array($item["network"], array_merge(Protocol::FEDERATED ,['']))) {
 			return;
 		}
 
diff --git a/src/Model/Profile.php b/src/Model/Profile.php
index 62d56798f..10bd3a1d7 100644
--- a/src/Model/Profile.php
+++ b/src/Model/Profile.php
@@ -471,7 +471,7 @@ class Profile
 					'pending' => false,
 					'hidden' => false,
 					'archive' => false,
-					'network' => [Protocol::DFRN, Protocol::ACTIVITYPUB, Protocol::OSTATUS, Protocol::DIASPORA],
+					'network' => Protocol::FEDERATED,
 				]);
 			}
 		}
diff --git a/src/Module/Contact.php b/src/Module/Contact.php
index feae601fd..dfa0b0659 100644
--- a/src/Module/Contact.php
+++ b/src/Module/Contact.php
@@ -521,7 +521,7 @@ class Contact extends BaseModule
 				$relation_text = '';
 			}
 
-			if (!in_array($contact['network'], [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::OSTATUS, Protocol::DIASPORA])) {
+			if (!in_array($contact['network'], Protocol::FEDERATED)) {
 				$relation_text = '';
 			}
 
@@ -968,7 +968,7 @@ class Contact extends BaseModule
 
 			$profiledata = Model\Contact::getDetailsByURL($contact['url']);
 
-			if (local_user() && in_array($profiledata['network'], [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS])) {
+			if (local_user() && in_array($profiledata['network'], Protocol::FEDERATED)) {
 				$profiledata['remoteconnect'] = System::baseUrl() . '/follow?url=' . urlencode($profiledata['url']);
 			}
 
diff --git a/src/Protocol/ActivityPub/Receiver.php b/src/Protocol/ActivityPub/Receiver.php
index 1d425600d..a8b5a18db 100644
--- a/src/Protocol/ActivityPub/Receiver.php
+++ b/src/Protocol/ActivityPub/Receiver.php
@@ -556,7 +556,7 @@ class Receiver
 				// Check if the potential receiver is following the actor
 				// Exception: The receiver is targetted via "to" or this is a comment
 				if ((($element != 'as:to') && empty($replyto)) || ($contact['contact-type'] == Contact::TYPE_COMMUNITY)) {
-					$networks = [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS];
+					$networks = Protocol::FEDERATED;
 					$condition = ['nurl' => Strings::normaliseLink($actor), 'rel' => [Contact::SHARING, Contact::FRIEND],
 						'network' => $networks, 'archive' => false, 'pending' => false, 'uid' => $contact['uid']];
 
@@ -591,7 +591,7 @@ class Receiver
 	public static function getReceiverForActor($actor, $tags)
 	{
 		$receivers = [];
-		$networks = [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS];
+		$networks = Protocol::FEDERATED;
 		$condition = ['nurl' => Strings::normaliseLink($actor), 'rel' => [Contact::SHARING, Contact::FRIEND, Contact::FOLLOWER],
 			'network' => $networks, 'archive' => false, 'pending' => false];
 		$contacts = DBA::select('contact', ['uid', 'rel'], $condition);
diff --git a/src/Protocol/ActivityPub/Transmitter.php b/src/Protocol/ActivityPub/Transmitter.php
index a3b8b679e..1d5192d93 100644
--- a/src/Protocol/ActivityPub/Transmitter.php
+++ b/src/Protocol/ActivityPub/Transmitter.php
@@ -358,7 +358,7 @@ class Transmitter
 
 		if (Config::get('debug', 'total_ap_delivery')) {
 			// Will be activated in a later step
-			$networks = [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS];
+			$networks = Protocol::FEDERATED;
 		} else {
 			// For now only send to these contacts:
 			$networks = [Protocol::ACTIVITYPUB, Protocol::OSTATUS];
@@ -530,7 +530,7 @@ class Transmitter
 
 		if (Config::get('debug', 'total_ap_delivery')) {
 			// Will be activated in a later step
-			$networks = [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS];
+			$networks = Protocol::FEDERATED;
 		} else {
 			// For now only send to these contacts:
 			$networks = [Protocol::ACTIVITYPUB, Protocol::OSTATUS];
diff --git a/src/Worker/UpdateGContact.php b/src/Worker/UpdateGContact.php
index b927e61bb..dd344baf9 100644
--- a/src/Worker/UpdateGContact.php
+++ b/src/Worker/UpdateGContact.php
@@ -31,13 +31,13 @@ class UpdateGContact
 			return;
 		}
 
-		if (!in_array($r[0]["network"], [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS])) {
+		if (!in_array($r[0]["network"], Protocol::FEDERATED)) {
 			return;
 		}
 
 		$data = Probe::uri($r[0]["url"]);
 
-		if (!in_array($data["network"], [Protocol::ACTIVITYPUB, Protocol::DFRN, Protocol::DIASPORA, Protocol::OSTATUS])) {
+		if (!in_array($data["network"], Protocol::FEDERATED)) {
 			if ($r[0]["server_url"] != "") {
 				PortableContact::checkServer($r[0]["server_url"], $r[0]["network"]);
 			}